import java.util.Stack;

public class MyQueue {
    public Stack st1=new Stack<>();
    public Stack st2=new Stack<>();
    public MyQueue() {

    }
    public void push(int x) {
        st1.push(x);
    }

    public int pop() {

    }

    public int peek() {
        if(!st2.empty()) return st2.pop();
    }

    public boolean empty() {

    }

}
